INT 62 - FGDRIVER v4.02 - "FG_INVERT" - INVERT ORIENTATION OF BITMAP AX = 0064h ES:BX -> bitmap CX = width of bitmap in bytes DX = height of bitmap in pixel rows Return: nothing Note: the FGDRIVER functions are rearranged with each major release, but their parameters do not change (see #03474 at AX=0000h)